package com.imooc.controller;


import com.imooc.pojo.Users;
import com.imooc.pojo.bo.UserBO;
import com.imooc.service.UserService;
import com.imooc.utils.CookieUtils;
import com.imooc.utils.IMOOCJSONResult;
import com.imooc.utils.JsonUtils;
import com.imooc.utils.MD5Utils;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
import org.apache.commons.lang3.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.*;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

@Api(value = "注册登录",tags = {"用于注册登录的相关接口"})
@RestController
@RequestMapping("passport")
public class PassportController {

    @Autowired
    private UserService userService;

    @ApiOperation(value = "用户名是否存在",notes = "用户名是否存在",httpMethod = "GET")
    @GetMapping("/usernameIsExist")
    public IMOOCJSONResult usernameIsExist(@RequestParam String username){

        //1.判断用户名不能为空
        if(StringUtils.isBlank(username)){
            return IMOOCJSONResult.errorMsg("用户名不能为空");
        }

        //2.查找注册的用户名是否存在;
        boolean isExist = userService.queryUsernameIsExist(username);
        if (isExist){
            return IMOOCJSONResult.errorMsg("用户名已经存在");
        }
        //3.请求成功 ，用户名没有重复
        return IMOOCJSONResult.ok();
    }
    @ApiOperation(value = "用户注册",notes = "用户注册",httpMethod = "POST")
    @PostMapping("/regist")
    public IMOOCJSONResult regist(@RequestBody  UserBO userBO,
                                  HttpServletRequest request,
                                  HttpServletResponse response )        {

        String username = userBO.getUsername();
        String password = userBO.getPassword();
        String confirmPwd = userBO.getConfirmPassword();

        // 0. 判断用户名和密码必须不为空
        if(StringUtils.isBlank(username)||
                StringUtils.isBlank(password)||
                StringUtils.isBlank(confirmPwd )){
            return  IMOOCJSONResult.errorMsg("用户名或密码不能为空");
        }
        // 1. 查询用户名是否存在
        boolean isExist = userService.queryUsernameIsExist(username);
        if (isExist){
            return IMOOCJSONResult.errorMsg("用户名已经存在");
        }
        // 2. 密码长度不能少于6位
        if(password.length()<6){
            return  IMOOCJSONResult.errorMsg("密码长度不能少于6");
        }

        // 3. 判断两次密码是否一致
        if(!password.equals(confirmPwd)){
            return  IMOOCJSONResult.errorMsg("两次密码输入不一致");
        }
        // 4. 实现注册
             Users userResult = userService.createUser(userBO);

                  userResult = setNullProperty(userResult);

                 CookieUtils.setCookie(request,response,"user",
                JsonUtils.objectToJson(userResult),true);
        // TODO 生成用户token，存入redis会话
        // TODO 同步购物车数据

        return  IMOOCJSONResult.ok();
    }
    //httpMethod不管是POST还是GET不要加空格
    @ApiOperation(value = "用户登录",notes = "用户登录",httpMethod = "POST")
    @PostMapping("/login")
    public IMOOCJSONResult login (@RequestBody  UserBO userBO,
                                  HttpServletRequest request,
                                  HttpServletResponse response )  throws  Exception {

        String username = userBO.getUsername();
        String password = userBO.getPassword();

        // 0. 判断用户名和密码必须不为空
        if(StringUtils.isBlank(username)||
                StringUtils.isBlank(password)){
            return  IMOOCJSONResult.errorMsg("用户名或密码不能为空");
        }
        // 1.实现登录
         Users userResult =   userService.queryUserForLogin(username,
                 MD5Utils.getMD5Str(password));

        if(userResult == null){
            return  IMOOCJSONResult.errorMsg("用户名或密码不正确");
        }

        userResult = setNullProperty(userResult);

        CookieUtils.setCookie(request,response,"user",
                JsonUtils.objectToJson(userResult),true);


        // TODO 生成用户token，存入redis会话
        // TODO 同步购物车数据

        return  IMOOCJSONResult.ok(userResult);








    }
    private Users setNullProperty(Users userResult){
            userResult.setPassword(null);
            userResult.setMobile(null);
            userResult.setEmail(null);
            userResult.setCreatedTime(null);
            userResult.setUpdatedTime(null);
            userResult.setBirthday(null);
            return  userResult;
    }
    @ApiOperation(value = "用户退出登录",notes = "用户退出登录",httpMethod = "POST")
    @PostMapping("/logout")
        public IMOOCJSONResult logout(@RequestParam String userId,
                                      HttpServletRequest request,
                                      HttpServletResponse response){

        // 清除用户的相关信息的cookie
        CookieUtils.deleteCookie(request,response,"user");

        // TODO 用户退出登录，需要清空购物车
        // TODO 分布式会话中需要清除用户数据

        return  IMOOCJSONResult.ok();
        }
}
